Strip-off, primed and properly bonded foundation parging in Type S or fibre-reinforced mix — built to survive the next 20 GTA winters instead of the next 2.
Free On-Site Quote
Call or email directly for the fastest, most accurate quote — usually scheduled within 1 business day.
Problem & Risk Analysis
Most foundation parging fails inside two winters because it was patched over the previous failure instead of being fully stripped to a sound substrate. A 5 mm skim coat over loose, dusty, oily or already-debonded parging has nothing to bond to — the freeze-thaw cycle peels it off the wall in sheets before the second spring.
Fadom Construction's parging method begins with a full mechanical strip-off back to sound concrete or block, followed by a power-wash, a bonding-agent primer (acrylic latex or SBR-modified), and a parge mix specified for the exposure — Type S for protected applications, a fibre-reinforced polymer-modified parge for high-exposure perimeters and chimney stacks above the roof line.
Finish is broom, float or smooth-trowel per the client's preference. The completed parging is misted-cured for the first 48 hours to prevent shrinkage cracking and reach full 28-day compressive strength.
Technical Service Breakdown
Failed existing parge is mechanically chipped to sound substrate, the wall is power-washed, and a bonding primer is applied. Skim-coating over a failed parge layer is explicitly out of scope — it is the single most common cause of two-winter re-failure on GTA foundations.
Protected parging gets a Type S mortar (1800 psi compressive). High-exposure perimeter, knee-wall and above-roof chimney parging gets a polymer-modified fibre-reinforced parge — flexural strength sufficient to bridge the seasonal movement that cracks rigid Type S.
Finish is broom, sponge-float or smooth-trowel. Active foundation cracks wider than 1 mm are routed and sealed with a flexible polyurethane sealant under the parge so the new coat does not telegraph the crack. First-48-hour mist-cure is mandatory.
Materials & Specifications
| Category | Material / Specification | Engineering Notes |
|---|---|---|
| Strip-Off | Mechanical chip to sound substrate, power-wash | Mandatory — no skim-over scope |
| Primer | Acrylic latex bonder, SBR-modified emulsion | Per manufacturer dwell time before parge |
| Mix Type | Type S mortar (1800 psi), polymer-modified fibre-reinforced parge | Specified per exposure class |
| Thickness | 10–20 mm typical, 25 mm at chimney stacks and knee-walls | Applied in 2 lifts above 15 mm |
| Finish | Broom, sponge-float, smooth-trowel | Client-specified finish on sample area first |
Code Compliance
GTA foundation parging is exposed to 40–55 freeze-thaw cycles per winter, ground-water wicking, road salt spray, and direct sun-driven thermal cycling — collectively the harshest environment any cementitious finish has to survive. Type S mortar (per CSA A179) is specified for protected exposure; a polymer-modified fibre-reinforced parge is specified for high-exposure perimeter walls and chimney-stack parging, where flexural strength matters more than compressive strength. Substrate preparation, not mix design, is the dominant variable in service life.
Service Area
Parging installed across 10 cities across the Greater Toronto Area. Select your city for local pricing, lead times and recent installs.
Free on-site assessment, fixed-price quote, written workmanship warranty.
